/*

 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

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 */

/*

 * @test

 * @bug 6355584

 * @summary Introduce constrained Kerberos delegation

 * @compile -XDignore.symbol.file S4U2selfGSS.java

 * @run main/othervm -Dsun.security.krb5.debug=false S4U2selfGSS krb5

 * @run main/othervm -Dsun.security.krb5.debug=false S4U2selfGSS spnego

 */

import java.util.Arrays;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import org.ietf.jgss.Oid;

import sun.security.jgss.GSSUtil;

public class S4U2selfGSS {

    public static void main(String[] args) throws Exception {

        Oid mech;

        if (args[0].equals("spnego")) {

            mech = GSSUtil.GSS_SPNEGO_MECH_OID;

        } else if (args[0].contains("krb5")) {

            mech = GSSUtil.GSS_KRB5_MECH_OID;

        } else {

            throw new Exception("Unknown mech");

        }

        OneKDC kdc = new OneKDC(null);

        kdc.writeJAASConf();

        kdc.setOption(KDC.Option.ALLOW_S4U2SELF, Arrays.asList(

                new String[]{OneKDC.USER + "@" + OneKDC.REALM}));

        Map<String,List<String>> map = new HashMap<>();

        map.put(OneKDC.USER + "@" + OneKDC.REALM, Arrays.asList(

                new String[]{OneKDC.SERVER + "@" + OneKDC.REALM}));

        kdc.setOption(KDC.Option.ALLOW_S4U2PROXY, map);

        Context c, s;

        System.setProperty("javax.security.auth.useSubjectCredsOnly", "false");

        c = Context.fromThinAir();

        s = Context.fromThinAir();

        c = c.impersonate(OneKDC.USER2);

        c.startAsClient(OneKDC.SERVER, mech);

        s.startAsServer(mech);

        Context.handshake(c, s);

        String n1 = c.x().getSrcName().toString().split("@")[0];

        String n2 = s.x().getSrcName().toString().split("@")[0];

        if (!n1.equals(OneKDC.USER2) || !n2.equals(OneKDC.USER2)) {

            throw new Exception("Impersonate failed");

        }

        s.dispose();

        c.dispose();

    }

}